If man was the relative of animals, then animals were the relatives of man, and in degrees bearers of that inwardness of which man, the most advanced of their kin, is conscious in himself.
Only a completely unintelligible God can be said to be absolutely good and absolutely powerful yet tolerate the world as it is.
Judaism and Christianity in themselves are distinctly separate entities, to be sure; but when considering their influence on Western thought, we must bear in mind that Christianity alone, or almost alone, transmitted the Jewish share, simply by what it contained of it in its own, original constitution.
The simple truth of our finiteness is that we could, by whatever means, go on interminably only at the price of either losing the past and, therewith, our identity, or living only in the past and therefore without a real present. We cannot seriously wish either and thus not a physical enduring at that price.
Act so that the effects of your actions are compatible with the permanence of genuine human life.
It is a changing world because of the newcomers who keep arriving and who leave us behind. Trying to keep pace with them is doomed to inglorious failure, especially as the pace has quickened so much.